β

180° - β

Verlängerung

M = (-8, 2)
r = 3 (slider from 0 to 5)
c = Circle(M, r)
A = Point(c)
B = Point(c)
C = Point(c)
f = Segment(A, B)
g = Segment(B, C)
D = (-9.190297262364115, 2.966553642962891)
h = Segment(A, D)
i = Segment(D, C)
β_1 = Angle(C, B, A)
α = Angle(A, D, C)
j = Line(A, D)
E, F = Intersect(c, j)
k = Segment(F, A)
l = Segment(F, C)
δ = Angle(D, F, C)
a = true
β = Angle(C, D, F)
γ = Angle(F, C, D)